Paul Ekman discovered that all of the following are examples of facial paralanguage, called conversational signals, except ______.

The _____ approach can counteract stereotyping by recognizing that things need not be perceived as “either/or,” but may be seen as “both/and.”

a. dichotomous b. dialectical c. polytheistic d. indulgence

The ____________________ of film emulsion or another recording medium expresses its graininess and ability to depict sharp edges and fine detail.

A. aperture B. f-stop C. definition D. focus